Signaling receiving method and related device

Abstract

Embodiments of the present invention disclose a signaling receiving method and a related device. The method includes: determining, by a terminal based on resource unit allocation signaling, locations of S resource units in a system bandwidth that are scheduled to the terminal; grouping, by the terminal, the S resource units into K resource groups, where a quantity of resource units that separate any resource unit in a first resource group from any resource unit in a second resource group in the system bandwidth is not less than a threshold M; and precoding, by the terminal by using N precoding matrices, data sent in N resource unit sets, where resource units included in each of the N resource unit sets are determined based on the K resource groups, and S, K, and M are all positive integers.

What is claimed is: 
     
       1. A method, comprising:
 determining, by a terminal based on resource unit allocation signaling, locations of S resource units in a system bandwidth that are scheduled to the terminal; 
 grouping, by the terminal, the S resource units into K resource groups, wherein a quantity of resource units that separate any resource unit in a first resource group from any resource unit in a second resource group in the system bandwidth is not less than a threshold M, the first resource group and the second resource group are any two of the K resource groups, a quantity of resource units that separate a first resource unit from a second resource unit in the system bandwidth is less than the threshold M, the first resource unit and the second resource unit are two resource units in a single resource group of the K resource groups, and in the system bandwidth, the first resource unit is a resource unit that is scheduled to the terminal preceding the second resource unit; 
 dividing a target resource group into j resource unit subsets, wherein the target resource group is a resource group in the K resource groups whose quantity of comprised resource unit sets is greater than or equal to 2, and each of the comprised resource unit sets in the target resource group is the same as each of the j resource unit subsets, respectively; and 
 precoding, by the terminal by using N precoding matrices, data sent in N resource unit sets, wherein each of the N resource unit sets comprises a number of resource units that are determined based on the K resource groups, and S, K, and M are all positive integers greater than or equal to one. 
 
     
     
       2. The method according to  claim 1 , wherein each of the N resource unit sets belongs to a first-type resource unit set or a second-type resource unit set, resource units comprised in any resource unit set belonging to the first-type resource unit set are the same as resource units comprised in at least one of the K resource groups, and resource units comprised in a plurality of resource unit sets in the second-type resource unit set belong to a same resource group of the K resource groups. 
     
     
       3. The method according to  claim 1 , wherein when a value of K is not greater than a value of N and K is greater than 1, each of the K resource groups comprises at least one of the N resource unit sets and different resource groups correspond to different resource unit sets; if a quantity of resource units comprised in a third resource group is greater than or equal to a quantity of resource units comprised in a fourth resource group, a quantity of resource unit sets comprised in the third resource group is not less than a quantity of resource unit sets comprised in the fourth resource group; and the third resource group and the fourth resource group are any two of the K resource groups. 
     
     
       4. The method according to  claim 1 , wherein when the value of K is 1, before the precoding, by the terminal by using N precoding matrices, data sent in N resource unit sets, the method further comprises:
 grouping the K resource groups into N resource unit subsets, wherein each of the N resource unit sets is the same as each of the N resource unit subsets, respectively. 
 
     
     
       5. The method according to  claim 1 , wherein when the value of K is greater than the value of N, each of the N resource unit sets comprises at least one of the K resource groups and different resource unit sets comprise different resource groups. 
     
     
       6. The method according to  claim 1 , wherein the threshold M is preconfigured in the terminal or is obtained by the terminal based on indication information, and the indication information is carried in higher layer signaling or downlink control information (DCI). 
     
     
       7. A method, comprising:
 grouping, by a network device, S scheduled resource units into K resource groups, wherein a quantity of resource units that separate any resource unit in a first resource group from any resource unit in a second resource group in the system bandwidth is not less than a threshold M, the first resource group and the second resource group are any two of the K resource groups, a quantity of resource units that separate a first resource unit from a second resource unit in the system bandwidth is less than the threshold M, the first resource unit and the second resource unit are two resource units in a single resource group of the K resource groups, and in the system bandwidth, the first resource unit is a resource unit that is scheduled to a terminal preceding the second resource unit; 
 sending, by the network device, resource unit allocation signaling, wherein the resource unit allocation signaling is used to indicate the S scheduled resource units; 
 dividing a target resource group into j resource unit subsets, wherein the target resource group is a resource group in the K resource groups whose quantity of comprised resource unit sets is greater than or equal to 2, and each of j resource unit sets comprised in the target resource group is the same as each of the j resource unit subsets, respectively; and 
 sending, by the network device, precoding indication information, wherein the precoding indication information is used to indicate N precoding matrices that are used for sending data in N resource unit sets, and each of the N resource unit sets comprises a number of resource units that are determined based on the K resource groups, and S, K, M, and N are all positive integers. 
 
     
     
       8. The method according to  claim 7 , wherein each of the N resource unit sets belongs to a first-type resource unit set or a second-type resource unit set, resource units comprised in any resource unit set belonging to the first-type resource unit set are the same as resource units comprised in at least one of the K resource groups, and resource units comprised in a plurality of resource unit sets in the second-type resource unit set belong to a same resource group of the K resource groups. 
     
     
       9. The method according to  claim 7 , wherein when a value of K is not greater than a value of N and K is greater than 1, each of the K resource groups comprises at least one of the N resource unit sets and different resource groups correspond to different resource unit sets; if a quantity of resource units comprised in a third resource group is greater than or equal to a quantity of resource units comprised in a fourth resource group, a quantity of resource unit sets comprised in the third resource group is not less than a quantity of resource unit sets comprised in the fourth resource group; and the third resource group and the fourth resource group are any two of the K resource groups. 
     
     
       10. The method according to  claim 7 , wherein when the value of K is 1, the method further comprises:
 grouping the K resource groups into N resource unit subsets, wherein each of the N resource unit sets is the same as each of the N resource unit subsets, respectively. 
 
     
     
       11. The method according to  claim 7 , wherein when the value of K is greater than the value of N, each of the N resource unit sets comprises at least one of the K resource groups and different resource unit sets comprise different resource groups. 
     
     
       12. The method according to  claim 7 , wherein the threshold M is preconfigured in the terminal or is obtained by the terminal based on indication information, and the indication information is carried in higher layer signaling or downlink control information (DCI). 
     
     
       13. A terminal, wherein the terminal comprises at least one processor and a memory, the memory is configured to store a program, and the at least one processor invokes the program in the memory to perform the following operations:
 determining, based on resource unit allocation signaling, locations of S resource units in a system bandwidth that are scheduled to the terminal; 
 grouping the S resource units into K resource groups, wherein a quantity of resource units that separate any resource unit in a first resource group from any resource unit in a second resource group in the system bandwidth is not less than a threshold M, the first resource group and the second resource group are any two of the K resource groups, a quantity of resource units that separate a first resource unit from a second resource unit in the system bandwidth is less than the threshold M, the first resource unit and the second resource unit are two resource units in a single resource group of the K resource groups, and in the system bandwidth, the first resource unit is a resource unit that is scheduled to the terminal preceding the second resource unit; 
 divide a target resource group into j resource unit subsets, wherein the target resource group is a resource group whose quantity of comprised resource unit sets is greater than or equal to 2 in the K resource groups, and each of j resource unit sets comprised in the target resource group is the same as each of the j resource unit subsets, respectively; and 
 precoding, by using N precoding matrices, data sent in N resource unit sets, wherein each of the N resource unit sets comprises a number of resource units that are determined based on the K resource groups, and S, K, and M are all positive integers. 
 
     
     
       14. The terminal according to  claim 13 , wherein each of the N resource unit sets belongs to a first-type resource unit set or a second-type resource unit set, resource units comprised in any resource unit set belonging to the first-type resource unit set are the same as resource units comprised in at least one of the K resource groups, and resource units comprised in a plurality of resource unit sets in the second-type resource unit set belong to a same resource group of the K resource groups. 
     
     
       15. The terminal according to  claim 13 , wherein when a value of K is not greater than a value of N and K is greater than 1, each of the K resource groups comprises at least one of the N resource unit sets and different resource groups correspond to different resource unit sets; if a quantity of resource units comprised in a third resource group is greater than or equal to a quantity of resource units comprised in a fourth resource group, a quantity of resource unit sets comprised in the third resource group is not less than a quantity of resource unit sets comprised in the fourth resource group; and the third resource group and the fourth resource group are any two of the K resource groups. 
     
     
       16. The terminal according to  claim 13 , wherein when the value of K is 1, before precoding, by using the N precoding matrices, the data sent in the N resource unit sets, the processor is further configured to:
 group the K resource groups into N resource unit subsets, wherein each of the N resource unit sets is the same as each of the N resource unit subsets respectively. 
 
     
     
       17. The terminal according to  claim 13 , wherein when the value of K is greater than the value of N, each of the N resource unit sets comprises at least one of the K resource groups and different resource unit sets comprise different resource groups.